TweenNano is a super-lightweight (1.6k in AS3 and 2k in AS2) version of TweenLite and is ideal for situations where you cannot afford the extra 3.1k (4.7k total) that the normal TweenLite engine would cost and your project doesn’t require any plugins. TweenNano can do everything TweenLite can do with some exceptions.

For a measly 1.6k, TweenNano is surprisingly capable. It can tween as many properties as you want of any object, base timing on frames or seconds, use onComplete and onUpdate callbacks, make delayedCall()s, do from() tweens, kill all the tweens of a particular object, and TweenNano easily outperforms most other engines including Adobe’s Tween class (by a wide margin).

Sample

import com.greensock.*;

//create the timeline and add an onComplete callback that will call myFunction() when the timeline completes
var myTimeline:TimelineLite = new TimelineLite({onComplete:myFunction});

//add a tween
myTimeline.append(new TweenLite(mc, 1, {x:200, y:100}));

//add another tween at the end of the timeline (makes sequencing easy)
myTimeline.append(new TweenLite(mc, 0.5, {alpha:0}));

//reverse anytime
myTimeline.reverse();

//Add a "spin" label 3-seconds into the timeline
myTimeline.addLabel("spin", 3);

//insert a rotation tween at the "spin" label (you could also define the insert point as the time instead of a label)
myTimeline.insert(new TweenLite(mc, 2, {rotation:"360"}), "spin");

//go to the "spin" label and play the timeline from there
myTimeline.gotoAndPlay("spin");

//add a tween to the beginning of the timeline, pushing all the other existing tweens back in time
myTimeline.prepend(new TweenMax(mc, 1, {tint:0xFF0000}));

//nest another TimelineLite inside your timeline...
var nestedTimeline:TimelineLite = new TimelineLite();
nestedTimeline.append(new TweenLite(mc2, 1, {x:200}));
myTimeline.append(nestedTimeline);